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What to do if my Fujitsu Air Conditioner remote is not working due to a communication error?
If you're experiencing a Wired Remote Controller Communication Error with your Fujitsu Air Conditioner, check the voltage. If it's DC12V, the remote control has failed and should be replaced. If it's DC 0V, the Controller PCB has failed and should be replaced after rechecking the remote control.
What to do if my Fujitsu ASU7RLF1 Air Conditioner has a drainage error?
If your Fujitsu Air Conditioner is experiencing drainage issues, start by inspecting the float switch for proper operation using a meter to check its on/off switching. If the float switch is defective, replace it. Also, examine the drain hose for any clogs and clear them if necessary. If these steps don't resolve the issue, consider replacing the controller PCB.
How to fix a Fujitsu Air Conditioner indoor unit fan motor error?
If you're encountering an indoor unit fan motor error with your Fujitsu Air Conditioner, check first the fan and bearing. If either is damaged, replace them. If the motor itself is faulty, replace the indoor unit fan motor. If these steps do not resolve the issue, replace the controller PCB.
What to do if my Fujitsu ASU7RLF1 Air Conditioner shows an indoor room thermistor error?
If your Fujitsu Air Conditioner displays an indoor room thermistor error, begin by checking the connector to ensure it is securely attached and properly connected, and verify that the thermistor cable is not open. If the thermistor is either open or shorted, replace it and then reset the power.
How to troubleshoot an Indoor Unit Model Information Error on my Fujitsu Air Conditioner?
If your Fujitsu Air Conditioner is showing an Indoor Unit Model Information Error, check for external causes such as noise and ensure the ground connection is properly connected. Also, inspect all connectors for looseness or incorrect wiring, and check the PCB for any shorts or corrosion. If the problem persists, consider replacing the Controller PCB.
What does an Indoor Unit Capacity Error mean on my Fujitsu Air Conditioner?
If your Fujitsu Air Conditioner is showing an Indoor Unit Capacity Error, first verify the total capacity of the connected indoor units. If an abnormal condition is found, correct it by referring to the Installation Manual or Design & Technical Manual. If the problem persists, replace the Main PCB of the Outdoor unit.
How to fix a Serial Communication Error (Serial Reverse Transfer Error) on a Fujitsu ASU7RLF1 Air Conditioner?
If your Fujitsu Air Conditioner displays a Serial Communication Error (Serial Reverse Transfer Error), check all connection lines between the indoor and outdoor units for any looseness or disconnections, referring to the Installation Manual or Data & Technical Manual for correction. Also, check the voltage of the power supply, ensuring it appears at the outdoor unit terminal L1 - L2 within the range of AC187V - 253V. Check that the indicated value swings between AC90V and AC270V at outdoor unit terminal 1 - 3. If the outdoor fan motor, active filter module, or IPM is abnormal, replace the corresponding part. If all parts are normal, replace the Main PCB.
How to resolve a Damper (Open/Close) simultaneous detection Limit switch error on a Fujitsu Air Conditioner?
If your Fujitsu Air Conditioner displays a Damper(Open/Close) simultaneous detection Limit switch error, replace the limit switch if it is defective. If the problem persists, replace the Controller PCB.
General| Brand | Fujitsu |
|---|---|
| Model | ASU7RLF1 |
| Category | Air Conditioner |
| Language | English |
Defines compressor frequency based on various conditions.
Automatically switches between Heating, Cooling, Dry, and Monitoring modes.
Controls indoor fan speed and airflow modes for different operations.
Controls indoor fan speed and airflow modes.
Manages airflow based on room temperature during cooling.
Automatically controls indoor fan speed during dry operation.
Manages airflow based on room temperature during heating.
Sets indoor fan speed to prevent cool air during heating.
Manages vertical and horizontal airflow direction and swing.
Controls vertical airflow direction and swing ranges.
Manages louver swing for airflow direction.
Controls horizontal airflow direction and swing.
Allows manual adjustment of right-left louvers for preferred airflow.
Controls the fan speed of the outdoor unit.
Manages compressor operation frequency and start-up control.
Allows setting ON/OFF, Program, and Sleep timers for operation.
Controls the opening of the electronic expansion valve based on operating conditions.
Procedures for performing test runs of the air conditioner system.
Prevents compressor restart for 3 minutes after stopping.
Manages 4-way valve switching timing between cooling and heating.
Automatically resumes operation with memorized contents after power interruption.
Allows manual auto operation without a remote controller.
Heats the compressor when the outdoor temperature is very low.
Provides maximum power operation for indoor and outdoor units.
Performs minimum heat operation via MIN. HEAT button or timer setting.
Reduces output for cooling and heating, saving energy.
Optimizes room temperature control for buildings with high insulation.
Controls compressor operation based on indoor unit sensor readings.
Controls compressor operation based on wired remote sensor readings.
Controls base heater operation based on outdoor temperature.
Synchronizes fresh air fan operation with indoor fan.
Controls external electrical heater operation based on specific conditions.
Details drain pump operation during cooling, dry, heating, and stop modes.
Controls air outlet direction (upper/lower) for effective cooling/heating.
Manages defrost operation based on temperature sensors and operating time.
Performs automatic wiring correction and checks connection status.
Covers various protection mechanisms for system safety.
Controls compressor frequency based on discharge pressure during heating.
Protects the system from high pressure during operation.
Stops the compressor if its temperature exceeds a limit.
Procedure for pump down operation when moving or discarding the unit.
Method for performing test runs on the outdoor unit.
Details error codes displayed on indoor units and remote controllers.
Shows error codes via indoor unit and remote controller displays.
Displays error codes on simple remote controllers.
Displays error codes for multiple indoor units via central controller.
Displays error codes and locations via outdoor unit LEDs.
Provides diagnostic steps for errors indicated by codes.
Troubleshoots serial communication errors between units.
Provides diagnostic steps for issues without specific error codes.
Troubleshooting steps for when the indoor unit has no power.
